Preferable Use of Hybrid Cement in Concrete Intended for Industrial Applications

ABOUT THE INTERNATIONAL CONCRETE ABSTRACTS PORTAL

  • The International Concrete Abstracts Portal is an ACI led collaboration with leading technical organizations from within the international concrete industry and offers the most comprehensive collection of published concrete abstracts.

International Concrete Abstracts Portal

  


Title: Preferable Use of Hybrid Cement in Concrete Intended for Industrial Applications

Author(s): I. Janotka, P. Martauz and Michal Bačuvčík

Publication: Special Publication

Volume: 320

Issue:

Appears on pages(s): 2.1-2.14

Keywords: alkali-silica reaction, concrete, hybrid cement; strength, shrinkage

Date: 8/1/2017

Abstract:
Important properties of the novel hybrid cement, H-Cement, are due to the use of fly ash, metallurgical slag, alkaline waste water from red mud deposits and ordinary portland clinker. H-Cement saves around 80 % of CO2 emissions compared to ordinary portland cement (OPC) production and enables effective recovery and safe disposal of industrial wastes. H-Cement is suitable for the preparation of ready-mixed concretes of strength classes between C8/10 (1160/1450 psi) and C30/37 (4350/5370 psi) and as a shrinkage reducing and alkali-silica reaction (ASR)-mitigation agent. This cement provides a slight expansion-reducing effect in permanent water curing at 20 °C (68 °F) and an evident shrinkage-reducing effect in permanent dry curing at 20 °C (68 °F) / 60 % R. H. and 40 °C (104 °F) / 15 % R. H. -air relative to OPC. The ASR is suppressed at 20 °C (68 °F) and 40 °C (104 °F) / 100 % R. H. -air cure.